Self-suction centrifugal pump

Abstract

The utility model discloses a self-suction centrifugal pump which comprises a pump body, an extension pipe is arranged on the pump body, a transverse partition plate is arranged in the extension pipe and divides the interior of the extension pipe into a water cavity and an air cavity, a through hole is formed in the transverse partition plate, and a floating ball is further arranged in the extension pipe. The floating ball can block the through hole after rising along with the water surface; the pump body is further provided with an air supply device, and the air supply device supplies air in the outlet pipe of the pump body into the air cavity. And the air cavity is provided with a spray head. Internal air can be automatically exhausted to form vacuum, the self-suction time is short, and the problems of heating and vibration are not prone to being caused.

Description

Technical Field

[0001] This utility model relates to a self-priming centrifugal pump, specifically a self-priming centrifugal pump. Background Technology

[0002] Traditional self-priming centrifugal pumps have long self-priming times, leading to problems such as overheating and vibration. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a self-priming centrifugal pump. This utility model can automatically discharge internal air to form a vacuum, has a short self-priming time, and is less likely to cause overheating or vibration problems.

[0004] To achieve the above technical objectives, this utility model adopts the following technical solution: a self-priming centrifugal pump, comprising a pump body, wherein the pump body is provided with an extension pipe, and a transverse partition is provided inside the extension pipe, the transverse partition dividing the interior of the extension pipe into a water chamber and an air chamber, the transverse partition having a through hole, and a float ball being provided inside the extension pipe, the float ball being able to rise with the water level and block the through hole; the pump body is also provided with an air supply device, the air supply device sending the gas in the pump body outlet pipe to the air chamber; the air chamber is provided with a nozzle.

[0005] The through hole has a truncated cone structure that is narrower at the top and wider at the bottom, and the top of the float has a truncated cone structure that is narrower at the top and wider at the bottom. The top of the float can block the through hole.

[0006] The top of the float is rounded.

[0007] The diaphragm is provided with a bracket, and a guide rod is fixed to the bracket. The guide rod passes through the float so that the float can rise and fall along the guide rod. The guide rod is located at the center of the through hole.

[0008] The bracket is provided with embedding blocks around its perimeter, and the cross diaphragm is provided with embedding grooves, in which the embedding blocks are embedded.

[0009] The bracket is surrounded by fixing plates, which are fixed to the crossbeams by bolts.

[0010] In summary, this utility model achieves the following technical effects:

[0011] This utility model features an extension pipe connected to the pump body. When water enters the pump body through the inlet, the internal air is displaced by the liquid surface and rises through the through hole into the air chamber. The gas in the pump body outlet pipe also enters the air chamber and is then ejected through the nozzle, thus expelling the air from inside the pump body. The structure is simple and the cost is low. Attached Figure Description

[0012] Figure 1It is a self-priming centrifugal pump;

[0013] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0014] Figure 3 yes Figure 2 A magnified view of a portion of the image;

[0015] Figure 4 This is a diagram of a float. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] Example:

[0023] Figure 1 It is a self-priming centrifugal pump, including a pump body 1, an extension pipe 2, a transverse partition 21 inside the extension pipe 2, the transverse partition 21 dividing the inside of the extension pipe 2 into a water chamber 23 and an air chamber 22, the transverse partition 21 having a through hole 211, a float ball 32 inside the extension pipe 2, the float ball 32 being able to rise with the water level and block the through hole 211; the pump body 1 is also provided with an air supply device 4, the air supply device 4 sending the gas in the pump body outlet pipe 12 to the air chamber 22; the air chamber 22 is provided with a nozzle 5.

[0024] This utility model is equipped with an extension pipe connected to the pump body. When water enters the pump body through the inlet 11, the air inside is pushed up by the liquid surface and enters the air chamber 22 through the through hole 211. The gas in the pump body outlet pipe 12 also enters the air chamber 22 and is then sprayed out through the nozzle 5, thereby realizing the discharge of air inside the pump body. The structure is simple and the cost is low.

[0025] Figure 2 yes Figure 1 A partially enlarged schematic diagram, Figure 3 yes Figure 2 The enlarged schematic diagram shows that the through hole 211 is a truncated cone structure that is narrow at the top and wide at the bottom, and the top of the float 32 is also a truncated cone structure that is narrow at the top and wide at the bottom. The top of the float 32 can block the through hole 211.

[0026] The structure, which is narrow at the top and wide at the bottom, allows the float to smoothly enter the through hole, and under the pressure of the liquid surface, it can tightly block the through hole without deflection. A sealing ring is used inside the through hole to achieve a seal.

[0027] The top of the float 32 is provided with a rounded corner 322 to facilitate the float entering the through hole.

[0028] like Figure 3As shown, the diaphragm 21 is provided with a bracket 33, and a guide rod 31 is fixed to the bracket 33. The guide rod 31 passes through the float 32 so that the float 32 can rise and fall along the guide rod 31. The guide rod 31 is located at the center of the through hole 211.

[0029] The guide rod acts as a guide rod to ensure that the float can smoothly enter the through hole. The mounting hole of the float is slightly larger than the outer diameter of the guide rod, which facilitates lifting and lowering and reduces resistance.

[0030] The bracket 33 is provided with embedding blocks 34 around its perimeter, and the cross partition 21 is provided with embedding grooves, in which the embedding blocks 34 are embedded.

[0031] The embedded block serves as a pre-fixing element, enhancing installation strength.

[0032] The bracket 33 is surrounded by fixing plates 35, which are fixed to the cross diaphragm 21 by bolts 36.

[0033] The fixing plate enhances the installation strength and ensures that the guide rod will not shift.

[0034] Figure 4 This is a schematic diagram of a float, which has a pear-shaped structure.

[0035] When water enters through inlet 11, the water level rises and enters extension pipe 2 and outlet pipe 12. The air inside the pump body is pushed out by the liquid level and enters the air chamber through the through hole. The air in outlet pipe 12 enters the air chamber through air supply device 4. The air in the air chamber is sprayed out through the nozzle under the action of air supply device.

[0036] The air supply device can be an air compressor, which can be connected to the pump shaft via a belt and started by the pump shaft.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A self-priming centrifugal pump, characterized in that: The pump body (1) is provided with an extension pipe (2). A horizontal partition (21) is provided inside the extension pipe (2). The horizontal partition (21) divides the interior of the extension pipe (2) into a water chamber (23) and an air chamber (22). The horizontal partition (21) has a through hole (211). A float (32) is also provided inside the extension pipe (2). The float (32) can block the through hole (211) after rising with the water level. The pump body (1) is also provided with an air supply device (4). The air supply device (4) sends the gas in the pump body outlet pipe (12) to the air chamber (22). The air chamber (22) is provided with a nozzle (5).

2. The self-priming centrifugal pump according to claim 1, characterized in that: The through hole (211) is a truncated cone structure that is narrow at the top and wide at the bottom. The top of the float (32) is also a truncated cone structure that is narrow at the top and wide at the bottom. The top of the float (32) can block the through hole (211).

3. A self-priming centrifugal pump according to claim 1, characterized in that: The top of the float (32) is rounded (322).

4. A self-priming centrifugal pump according to claim 1, characterized in that: The diaphragm (21) is provided with a bracket (33), and a guide rod (31) is fixed to the bracket (33). The guide rod (31) passes through the float (32) so that the float (32) can rise and fall along the guide rod (31). The guide rod (31) is located at the center of the through hole (211).

5. A self-priming centrifugal pump according to claim 4, characterized in that: The bracket (33) is provided with embedding blocks (34) around its perimeter, and the diaphragm (21) has an embedding groove, in which the embedding blocks (34) are embedded.

6. A self-priming centrifugal pump according to claim 5, characterized in that: The bracket (33) is provided with a fixing plate (35) around its perimeter, and the fixing plate (35) is fixed to the cross plate (21) by bolts (36).

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